A mains electricity (AC-powered) device designed to distend the peritoneal cavity by filling it with a pressure-limited gas [typically carbon dioxide (CO2)] providing the operator with a space (pneumoperitoneum) in which to perform an examination or surgical intervention. Electronics assist in monitoring the pressure and maintaining the gas-filled space by compensating for gas leakage. Other surgical instruments may be introduced into the peritoneal cavity through other laparoscopic ports. This device may also be referred to as a gas distention system.